How to load HSDL bonus scheme name that errors inconsistently

Hello

I am loading in Bonus Scheme name change and have copied all values from UI as it is

for half of the people in the loader I get an error saying "Value xxxxxxx is not in the list."

I have verified in the UI that the value exists

Some people are able to be loaded in successfully with the exact same bonus, so I am unsure at what point this is going wrong

please advise and if I need to add further docs I will